Lu, W
Liu, S
Li, B
Xie, Y
Izban, M G
Ballard, B R
Sathyanarayana, S A
Adunyah, S E
Matusik, R J
Chen, Z
Article History
Received: 24 February 2016
Revised: 24 June 2016
Accepted: 17 July 2016
First Online: 21 November 2016
Competing interests
: The authors declare no conflict of interest.